Simple PHP script to retrieve all Netflix ranges for EU\US\SA banks and export to file as OpenVPN config routes

Netflix_OpenVPN_Ranges.php

<?php
/**
 * Simple script to parse Amazon EC2 IP Range JSON file and Netflix ASN blocks into OpenVPN routes
 *
 * Running the script with the tunnel argument changes the routes to not have net_gateway added to them
 * in the event you are specifically routing certain traffic over the tunnel
 *
 * Created by PhpStorm.
 * User: b3rs3rk
 * Date: 11/26/2016
 * Time: 6:33 PM
 */

if (isset($argv[1]) && $argv[1] === 'tunnel') {
	$gateway = '';
} else {
	$gateway = ' net_gateway';
}

$outPutString = '';

parseAmazonJSON($outPutString);
parseNetFlixASN($outPutString);

if (!empty($outPutString)) {
	file_put_contents('netflix-routes.txt', $outPutString);
}

function parseAmazonJSON(&$outPutString)
{
	$arrUs = $arrEu = $arrSa = $arrAp = $arrCn = array();

	try {
		$awsRanges = json_decode(file_get_contents('https://ip-ranges.amazonaws.com/ip-ranges.json'), true);
	} catch (Exception $e) {}

	if (isset($awsRanges) && is_array($awsRanges)) {
		foreach ($awsRanges['prefixes'] AS $range) {
			if ($range['service'] === 'EC2' && isset($range['ip_prefix'])) {
				if (preg_match('/((\d+\.){3}\d+)/i', $range['ip_prefix'], $matches)) {
					if (stripos($range['region'], 'us') === 0) {
						$arrUs[] = $matches[1] . ' ' . cidr2NetmaskAddr($range['ip_prefix']);
					}
					else if (stripos($range['region'], 'eu') === 0) {
						$arrEu[] = $matches[1] . ' ' . cidr2NetmaskAddr($range['ip_prefix']);
					}
					else if (stripos($range['region'], 'sa') === 0) {
						$arrSa[] = $matches[1] . ' ' . cidr2NetmaskAddr($range['ip_prefix']);
					}
					else if (stripos($range['region'], 'ap') === 0) {
						$arrAp[] = $matches[1] . ' ' . cidr2NetmaskAddr($range['ip_prefix']);
					}
					else if (stripos($range['region'], 'cn') === 0) {
						$arrCn[] = $matches[1] . ' ' . cidr2NetmaskAddr($range['ip_prefix']);
					}
				}
			}
		}
	}

	if (!empty($arrUs)) {
		writeArrToOutputString($outPutString, $arrUs, 'Amazon EC2 (United States)');
	}
	if (!empty($arrEu)) {
		writeArrToOutputString($outPutString, $arrEu, 'Amazon EC2 (Europe)');
	}
	if (!empty($arrSa)) {
		writeArrToOutputString($outPutString, $arrSa, 'Amazon EC2 (South America)');
	}
	if (!empty($arrAp)) {
		writeArrToOutputString($outPutString, $arrAp, 'Amazon EC2 (Asia Pacific)');
	}
	if (!empty($arrCn)) {
		writeArrToOutputString($outPutString, $arrCn, 'Amazon EC2 (China)');
	}
}

function parseNetFlixASN(&$outPutString)
{
	try {
		$netflixASNBlocks = file_get_contents('http://ipinfo.io/AS2906');
	} catch (Exception $e2) {}

	if (isset($netflixASNBlocks)) {
		if(preg_match_all('#>((\d+\.){3}\d+\/\d+)<#i', $netflixASNBlocks, $matches)) {
			foreach ($matches[1] AS $RangeMatches) {
				$arrNetflix[] = preg_replace('#\/\d+$#i', '', $RangeMatches) . ' ' . cidr2NetmaskAddr($RangeMatches);
			}
		}
	}

	if (!empty($arrNetflix)) {
		writeArrToOutputString($outPutString, $arrNetflix, 'Netflix ASN');
	}
}

function writeArrToOutputString(&$outPutString, $arrRegion, $header)
{
	global $gateway;

	$outPutString .= "# {$header}" . PHP_EOL;
	foreach($arrRegion AS $key => $value) {
		$outPutString .= 'route ' . $value . $gateway . PHP_EOL;
	}
	$outPutString .= PHP_EOL;
}

// http://stackoverflow.com/questions/5710860/php-cidr-prefix-to-netmask
function cidr2NetmaskAddr($cidr)
{
	$ta = substr($cidr, strpos($cidr, '/') + 1) * 1;
	$netmask = str_split(str_pad(str_pad('', $ta, '1'), 32, '0'), 8);
	foreach ($netmask as &$element) $element = bindec($element);
	return join('.', $netmask);
}

How do I use the output of this script? I've added the output to the "Additional Config" within my "DD-WRT" VPN Client config, and the VPN will not connect. Thank you!